Street gas-lamp.



. S. P. KRAUS.

STREET GAS LAMP.

APPLIGATION rum) SEPT. 21, 1910.

1,003,615, Patented Sept. 19,1911.

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STREET GAS LAMP.

APPLICATION FILED SEPT. 21, 1910.

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min!" Wllllli @WggM Patented Sept. 19, 1911.

UNITED STATES PATENT OFFICE.

SAMUEL F. KRAUS, OF DENVER, COLORADO, ASSIGNOR TO THE KRAUS LIGHTCOMPANY, OF DENVER, COLORADO, A CORPORATION OF COLORADO.

STREET GAS-LAMP.

To all whom it may concern:

Be it known that I, SAMUEL F. KRAUs, a citizen of the United States,residing in the city and county of Denver and State of Colorado, haveinvented certain new and useful Improvements in Street Gas-Lamps; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

My invention relates to improvements in gas lamps more especiallyintended for street use, and in which a mantle of refractory material isemployed above the burner to increase the intensity and brilliancy ofthe light.

The features of my improvement relate to the manipulation of differentparts of the lamp structure during the operation of cleaning the lamp ortaking it apart.

One very important feature consists in means for raising the mantleupwardly 'out of the glass chimney and into the metal hood above thechimney, whereby the delicate mantle is protected from injury during theoperation of cleaning the chimney, the burner and other parts of thelamp. This feature of the device consists of a guide sleeve from whichthe mantle is suspended, and a ratchet rod connected with thesleeve andprotruding through and above the top of the metal hood, whereby the rodis accessible from the outside of the lamp and may be employed to liftthe guide sleeve and consequently the mantle suspended therefrom, upwardinto the hood above the chimney, spring pawl located on top of the hoodand adapted to engage the teeth of the ratchet rod, being employed formaintaining the mantle in its suspended position during the operation ofcleaning the lamp as aforesaid.

Another feature of the invention consists in providing means forsupporting the glass chimney in a position raised above the burner, whenthe mantle is in the raised position, whereby free access is given tothe burner and other parts of the lamp located below the chimney.

Still another feature consists ina readily Specification of LettersPatent.

Application filed September 21, 1910.

Patented Sept. 19, 1911.

Serial No. 583,130.

slot formed in the edge of the hood cap.

When, however, this sleeve is lifted the hood is free to move away fromthe rod and may then be lifted out of its supporting ring below when itis desired to dismantle the lamp for purposes of cleaning or repair.

Having briefly outlined my improved construction, I will proceed todescribe the same in detail, reference being made to the accompanyingdrawing in which is illustrated an embodiment thereof.

In this drawing: Figure 1 is a vertical section taken through a gas lampequipped with my improvements. Fig. 2 is a detail view of the ratchetrod and guide sleeve forming the support for the mantle. Fig. 3 is adetail elevation illustrating the mantle and the suspension hook withwhich the top of the mantle is connected. Fig. 4c is a top plan view indetail illustrating the dog or keeper employed to connect the rod andhood when the parts of the lamp are in the assembled relation. Fig. 5 isa View similar to Fig. 1, but showing the parts in different relativepositions. Fig. 6 is a detail view illustrating the hood portion of thelamp together with the mantle, and the means for supporting the latterin the raised position. Fig. 7 is a top plan view of the guide sleeveforming the support for the mantle, the suspension hook employed inconnection with the mantle being also illustrated. Fig. 8 is a detailsectional view taken on the line 8-8 Fi 6, looking in the direction ofthe arrow.

The same reference characters indicate the same parts in all the views.

Let the numeral 52 designate the lamp burner; 6 thesuspension tube; 7the mantle; 8 the glass chimney normally surrounding the mantle; and 9the metal hood supported upon a ring 10 carried by the tube 6. The shadeholder 12 is also mounted on the rod, the shade 13 being connected withthe holder by means of screws 1 1 or other suitable fastening devices.

19 of the yoke 17 are moved into engagepart 16 of a suspension yoke 17having lat erally projecting arms 18 provided with downwardly turnedextremities 19 adapted to enter perforations formed in supporting ears20 with which a guide sleeve 21 is equipped. These cars 20 are providedwith reversely arranged, upwardly projecting oarts 22 so arranged thatwhen the hooks ment with the projections 22 of the ears the said hookswill be in position to enter the perforations in the said ears. In thisway the upwardly projecting parts 22 of the ears aid in connecting thehook with the guide sleeve of the mantle supporting device. This guidesleeve 21'fits within the hood 9 of the lamp, the said hood beingsupported above the chimney as heretofore explained.

Connected with the sleeve 21 by means of small clips 23 is a rod 24having relatively shallow ofisets or teeth 25 adapted to engage a springpawl 26 mounted onzthetop 27 of the hood. The upper extremity of thisratchet rod protrudes through a perforation 28 formed in the top of thehood, the upper I extremity of the rod being threaded to receive a nut29, whereby the length of the rod ext-ending below the top of the hoodmay be adjusted within given limits so that a longer or shorter mantlemay be employed. It sometimes happens that a portion of the lower partof the mantle is practically destroyed while the upper part is intact.In this case as the lower part of the mantle disintegrates or becomesuseless, the mantle may be lowered to compensate for its decrease inlength, since it is desirable that the lower extremity of the mantleshall be suspended immediately above the burner.

The dog 26 may be held in such position that it will not engage theratchet rod, by employing a depending manipulating rod 30 whose upperportion passes through the topof the hood and is connected wit-h thespring pawl 26 as shown at 31. This pawl is mounted on the top 27 of thehood, in

suitable proximity to the rod 24 when the latter is raised for thepurpose of supporting the mantle, within the hood. As soon as theratchet rod is drawn upwardly through its perforation in the top 27 ofthe hood, the spring pawl should be released and allowed to engage atooth of the rod for supporting the mantle in the position indicated bydotted lines-in Fig. 1 and by full lines in Fig. 5. The lower extremityof the rod 30 is bent as shown at 36 forming a sort of foot adapted torest upon a spider arm 32 of the shade holder 12.

In order to support the glass chimney 8 in a position raised upwardlyinto the hood, a hook 33 mounted on one of the spider arms of the shadeholder is employed. When the chimney is raised to the upper position,the lower end of the hook 33 is inserted in one of the openings 34formed in the lower part of the chimney for draft purposes.

WVhen the parts of the lamp are assembled the upper portion 35 of thesupporting rod 6, engages a slot 37 formed in the outer edge of the top27 of the hood. A dog 38 slidable on the said rod and having a tooth 39entering a small perforation 40 formed in the top of the hood, isemployed to maintain the hood and rod in the assembled relation. When,however, the dog is moved upwardly on the rod whereby its tooth 39 isdisengaged from the top 27 of the hood, the upper portion of the lattermay be moved away from the rod sufficiently to allow the hood to belifted from its supporting ring 10, for the purpose of dismantling thelamp.

From the foregoing description the use of the novel features of myimproved device will be readily understood. hen it is desired to cleanthe lamp, or when for any reason it is desired to remove the mantle fromthe chimney, the operator grasps the upper protruding threaded extremityof the rod 21 and raises the same until the mantle is lifted into thehood 9 as indicated by dotted lines in Fig. 1 and in full lines in Figs.5 and 6. In this event it is evident that the chimney and other parts ofthe lamp below the hood may be cleaned without interfering with themantle, which, as is well known, is quite delicate and easily injured.In case it is desired to clean the burner, the chimney 8 may be raisedinto the hood and supported upon a hook 33 which may be passed throughone of the perforations 341- in the lower part of the chimney, asillustrated in Fig. 5. Again inthe event that it is desirable to removethe hood from the lamp, the dog 38 may be moved upwardly upon thesupporting rod 6 above the hood, thus disengaging the tooth 39 from thetop of the hood. In this event the hood may be moved away from thesupporting rod and thenlifted from the ring 10, which normally forms thesupport for the hood.

Attention is called to the fact that the supporting rod 6 and its uppermember 35 constitute a tube or conduit through which the gas is suppliedto the burner. This feature, however, has nothing to do with theinvention involved in this application.

In further explanation of the operation of the construction, attentionis called to the fact that the sleeve 21 together with the mantlesuspended therefrom may be raised by the lifting of the chimney 8, sincethe top of the chimney will engage the lugs 20 of the sleeve 21 andcarry the said sleeve together with the mantle and the rod 2 1 forwardlytherewith, and when the hook 33 is connected with the chimney asheretofore explained, this hook serves to support the chimney and mantlewithout the aid of the pawl 26. Now if it is desired to remove thechimney while the mantle is still suspended, the pawl 26 will bereleased to engage a tooth of the ratchet rod, whereby the pawl willserve to support the sleeve and mantle. The hook 33 may then bedisengaged from the chimney when the latter may be removed. Attention iscalled to the fact that the hook 33 is so mounted on the spider arm 32of the lamp shade holder that as soon as the chimney is lifted torelieve the hook of the weight of the chimney, the hook willautomatically swing clear from the chimney. However, if it is desired tolower the chimney and mantle simultaneously to their operatingpositions, it is only necessary to release the hook from the chimney andas the latter is allowed to move downwardly to its proper position, thesleeve 21 together with the mantle will move downwardly therewith andresume the normal positions which they occupy when the lamp is regularlyin use. It will thus be seen that when the chimney and mantle are movedtogether, it is not necessary to employ the pawl 26 or the teeth of therod 24; for supporting the mantle, since the chimney constitutes suchsupport, the chimney in turn being supported by the hook 33.

Having thus described my invention, what I claim is:

1. The combination with a lamp having a burner, a mantle and a hoodnormally located above the mantle, of means for raising the mantleupwardly into the hood, comprising a rod, a guide sleeve connected withthe rod and forming a support for the mantle, the sleeve being locatedwithin the hood an movable vertically therein, the rod protrudingthrough the top of the hood in which it slides freely, and means adaptedto engage the rod for supporting the sleeve and mantle in the raisedposition when properly adjusted. substantially as described.

2. The combination with a gas lamp having a mantle arranged to cooperatewith the burner, and a hood normally located above the mantle, of meansfor raising the mantle into a position within the hood, comprising a rodprotruding through the top of the hood and freely slidable therein, anda sleeve connected with the lower extremity of the rod and locatedwithin the hood and forming a support for the mantle, substantially asdescribed.

3. The combination with a gas lamp having a mantle cooperating with theburner, and a hood normally occupying a position above the mantle andprovided with a cap, of a sleeve located within the hood and slidablevertically therein, the mantle being connected with the said sleeve, arod con nected with the sleeve and extending through a perforationformed in the top of the hood, the upper extremity of the rod beingthreaded and provided with an adjusting nut, for the purpose set forth.

4. The combination with a gas lamp having a mantle cooperating with theburner, and a hood normally located above the mantle, of a sleevelocated within the hood, a suspension yoke detachably connected with thesleeve and forming a support for the mantle, and a rod connected withthe sleeve and extending through an opening formed in the top of thehood, the upper extremity of the rod being provided with a stop engagingthe top of the hood, substantially as described.

5. In a gas lamp having a mantle cooperating with the burner, and a hoodlocated above the mantle and provided with a cap, the combination of asleeve located within the hood, a yoke cletachably connected with thesleeve and forming a support for the mantle, a ratchet rod whose lowerextremity is secured to the sleeve, the said rod passing through anopening formed in the top of the hood, and a spring pawl mounted on topof the mantle and cooperating with the teeth of the ratchet rod tosupport the sleeve and mantle in the raised position, substantially asdescribed.

6. In a gas lamp having a mantle cooperating with the burner, and a hoodnormally occupying a position above the mantle, the combination of a rodpassing through a perforation formed in the top of the hood, a sleevearranged within the hood and vertically movable therein, the said sleevebeing connected with the lower extremity of the rod, the mantle beingsupported by the said sleeve and means adapted to engage the rod forholding the mantle in the raised position.

7. The combination in a gas lamp having a mantle cooperating with theburner, a hood normally located above the mantle, and a chimneysurrounding the mantle, of a mantle support vertically movable in thehood, a rod connected with the said support and passing through the topof the hood, the rod having ratchet keys, a spring pawl located on topof the hood, and a manipulating rod connected wit-h the pawl andextending downwardly therefrom, the lamp being provided with a supportfor the lower extremity of the rod, whereby the spring pawl may be heldout of the path of the ratchet rod, for the purpose set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

SAMUEL F. KRAUS.

Witnesses:

A. J. OBRIEN, F. E. BownN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

